Don 1 Crowded

I am not sure who Don 1 crowded is? Or, what Don’t crowded means?

This sign made me question how you avoid crowding because once you are in a crowd it is generally hard to get out.

Often you are crowding to look at something cool and you don’t want to miss out as you’ve paid for it … or you don’t want to get out of the crowd as you are trying to get to work in rush hour and you are already late and crowding is the only option …